Just start a 10week cycle on test-e and use that new found man anger to give the misses a good 10 weeks and channel the remainder at the gym.
On a serious note, I know what you mean, Ive started to become a grumpy old man at 23, I think whats the point of working hard, paying a mortgage etc..... This ended up having an effect on home life as I'd just would be miserable when I got home, I hate my job and I've never really tried to enjoy myself. Never saw a doctor about it, just dealt with it in my own way. I am still being somewhat grumpy now but not as bad, instead I've gone f*ck this and let myself go, booked a trip to Germany to see friends in osnabruck with the misses. Next year a few friends and a mechanic I have got to know through a recommendation on here are heading to the ring, followed by a hopefully trying to organize a small/short snowboarding trip at the end of next year as I've always wanted to do it along with the ring. But I do understand where you are coming from my sister this year had a cyst on her thyroid to also discover cancer their as well, but all has gone well.
Not sure what to recommend as everyones different, I found doing things I've always wanted to do and make time for myself is what I really needed, it gives life more of a goal rather than the usual work day grind with no point.